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- byte offset for modeX fixed (use value of CRT register 0x13)

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This commit is contained in:
Volker Ruppert 2002-07-21 11:03:43 +00:00
parent eaf037e658
commit e5f8fc20f5
1 changed files with 3 additions and 2 deletions
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5
bochs/iodev/vga.cc
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@ -1,5 +1,5 @@
///////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////
// $Id: vga.cc,v 1.34 2002-04-29 13:06:06 japj Exp $ // $Id: vga.cc,v 1.35 2002-07-21 11:03:43 vruppert Exp $
///////////////////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////
// //
// Copyright (C) 2002 MandrakeSoft S.A. // Copyright (C) 2002 MandrakeSoft S.A.
@ -1434,7 +1434,8 @@ bx_vga_c::update(void)
pixelx = ((xti*X_TILESIZE) + c); pixelx = ((xti*X_TILESIZE) + c);
plane = (pixelx % 4); plane = (pixelx % 4);
byte_offset = (plane * 65536) + byte_offset = (plane * 65536) +
(pixely * 80) + (pixelx >> 2); (pixely * (BX_VGA_THIS s.CRTC.reg[0x13]<<1))
+ (pixelx >> 2);
color = BX_VGA_THIS s.vga_memory[start_addr + byte_offset]; color = BX_VGA_THIS s.vga_memory[start_addr + byte_offset];
BX_VGA_THIS s.tile[r*X_TILESIZE + c] = color; BX_VGA_THIS s.tile[r*X_TILESIZE + c] = color;
} }